Question

During protein synthesis, an RNA strand is transcribed from one strand of DNA that reads:

GCG TTA CCT

What is the complementary RNA strand to the DNA strand shown above?
Responses

CGC AAT GGA
CGC AAT GGA

GCG UUA CCU
GCG UUA CCU

CGC UUT CCT
CGC UUT CCT

CGC AAU GGA

Answer 1

To transcribe the complementary RNA strand from the given DNA strand (GCG TTA CCT), you need to replace the DNA bases with their RNA counterparts.

The base pairing rules are as follows:
- Adenine (A) pairs with Uracil (U) in RNA (instead of Thymine (T) in DNA).
- Thymine (T) pairs with Adenine (A).
- Cytosine (C) pairs with Guanine (G).
- Guanine (G) pairs with Cytosine (C).

Using these rules, we can transcribe the RNA strand from the provided DNA strand:

1. G (DNA) pairs with C (RNA)
2. C (DNA) pairs with G (RNA)
3. G (DNA) pairs with C (RNA)
4. T (DNA) pairs with A (RNA)
5. T (DNA) pairs with A (RNA)
6. A (DNA) pairs with U (RNA)
7. C (DNA) pairs with G (RNA)
8. C (DNA) pairs with G (RNA)
9. T (DNA) pairs with A (RNA)

So, the transcription of the DNA sequence GCG TTA CCT into RNA results in the RNA sequence:

CGC AAU GGA

Therefore, the correct response is:

**CGC AAU GGA**